CVE-2025-38080

Summary

In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Increase block_sequence array size [Why] It's possible to generate more than 50 steps in hwss_build_fast_sequence, for example with a 6-pipe asic where all pipes are in one MPC chain. This overflows the block_sequence buffer and corrupts block_sequence_steps, causing a crash. [How] Expand block_sequence to 100 items. A naive upper bound on the possible number of steps for a 6-pipe asic, ignoring the potential for steps to be mutually exclusive, is 91 with current code, therefore 100 is sufficient.

Impact & exploitability

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products we track (1)

Recommendation

Apply the vendor fix promptly. Open any affected product above for its exact safe version.

Official patch: https://git.kernel.org/stable/c/3a7810c212bcf2f722671dadf4b23ff70a7d23ee ↗

Additional information

• NVD record
• https://git.kernel.org/stable/c/3a7810c212bcf2f722671dadf4b23ff70a7d23eePatch
• https://git.kernel.org/stable/c/bf1666072e7482317cf2302621766482a21a62c7Patch
• https://git.kernel.org/stable/c/de67e80ab48f1f23663831007a2fa3c1471a7757Patch
• https://git.kernel.org/stable/c/e55c5704b12eeea27e212bfab8f7e51ad3e8ac1fPatch